论文标题
各向同性宇宙双折射的检测及其对轴突样颗粒（包括暗能量）的影响
Detection of isotropic cosmic birefringence and its implications for axion-like particles including dark energy
论文作者
论文摘要
我们调查了具有各种电位的轴状颗粒（ALP）的可能性，这些颗粒是通过分析Planck 2018极化数据最近报道的各向同性双折射的可能性。对于二次和余弦电位，我们在质量上获得下限，将常数与光子$ g $耦合，丰度和ALP状态方程，以产生观察到的双折射。尤其是当ALP负责黑暗能源时，可以通过宇宙双折射从$ -1 $探索状态的暗能量方程式的微小偏差。我们还探索了作为早期黑暗能源（EDE）工作的阿尔卑斯山，这减轻了哈勃张力问题。由于其他参数受EDE要求的限制，因此我们将Alp-Photon耦合缩小到$ 10^{ - 19} \，{\ rm Gev}^{ - 1} { - 1} \ sillesim g \ lyseSim g \ lyseSim 10^{ - 16}}} - 16}} $ f = m_ \ mathrm {pl} $。因此，哈勃张力和各向同性双折射意味着$ g $通常是$ f^{ - 1} $的顺序，这是一个非平凡的巧合。
We investigate the possibility that axion-like particles (ALPs) with various potentials account for the isotropic birefringence recently reported by analyzing the Planck 2018 polarization data. For the quadratic and cosine potentials, we obtain lower bounds on the mass, coupling constant to photon $g$, abundance and equation of state of the ALP to produce the observed birefringence. Especially when the ALP is responsible for dark energy, it is possible to probe the tiny deviation of dark energy equation of state from $-1$ through the cosmic birefringence. We also explore ALPs working as early dark energy (EDE), which alleviates the Hubble tension problem. Since the other parameters are limited by the EDE requirements, we narrow down the ALP-photon coupling to $10^{-19}\, {\rm GeV}^{-1}\lesssim g\lesssim 10^{-16}\, {\rm GeV}^{-1}$ for the decay constant $f=M_\mathrm{pl}$. Therefore, the Hubble tension and the isotropic birefringence imply that $g$ is typically the order of $f^{-1}$, which is a non-trivial coincidence.
